X-RAY SCANNING SYSTEM AND METHOD

摘要

Systems and methods are provided for scanning an item utilizing an X-ray scanner in order to facilitate a determination of whether the X-ray radiation penetrated through the entirety of the scanned item. Various embodiments comprise a conveying mechanism, an X-ray emitter, a detector, and an X-ray penetration grid (XPG). The XPG may comprise a radiopaque grid that may serve as a reference for determining whether radiation passes through the scanned item, the grid oriented such that the grid members are neither parallel nor perpendicular to the direction of travel. Such orientation may minimize or eliminate “ghosted” radiation signals included in a visual display of the radiation received by the detector. A scanned item may be oriented with the XPG such that radiation emitted by the X-ray emitter that passes through a portion of the scanned item must also pass through the XPG before being received by the detector.

主权项

1. An X-ray detector system for determining the contents of an item, the system comprising:
an X-ray emitter configured for emitting X-ray radiation; a detector comprising a receiving surface, the detector configured to receive the X-ray radiation and to generate one or more intensity signals indicative of an intensity of the received X-ray radiation at each of a plurality of locations on the receiving surface; an X-ray penetration grid comprising a first grid structure comprising:
a perimeter surrounding the X-ray penetration grid having at least a first side, said first side being oriented in a first primary direction;a first plurality of parallel grid members each having a first end and a second end; anda second plurality of parallel grid members each having a first end and a second end;wherein:
the first end and the second end of each of the first plurality of parallel grid members intersects the perimeter at an angle such that the first plurality of parallel grid members are neither parallel nor perpendicular to the first side of the perimeter; andthe first end and the second end of each of the second plurality of parallel grid members intersects the perimeter at an angle such that the second plurality of parallel grid members are neither parallel nor perpendicular to the first side of the perimeter; and a conveying mechanism configured for conveying the item and the X-ray penetration grid in a second primary direction to a location between the X-ray emitter and the detector, said second primary direction being substantially the same as the first primary of direction.